CN103616032A - Method and device for automatically controlling display scale and three-dimensional view angle of navigation map - Google Patents
Method and device for automatically controlling display scale and three-dimensional view angle of navigation map Download PDFInfo
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- CN103616032A CN103616032A CN201310632764.8A CN201310632764A CN103616032A CN 103616032 A CN103616032 A CN 103616032A CN 201310632764 A CN201310632764 A CN 201310632764A CN 103616032 A CN103616032 A CN 103616032A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3626—Details of the output of route guidance instructions
- G01C21/3635—Guidance using 3D or perspective road maps
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Abstract
The invention provides a method for automatically controlling a display scale and a three-dimensional view angle of a navigation map and belongs to the field of intelligent transportation. The method comprises the following steps: during navigation, continuously calculating a straight-line distance from the current location to a front next turning point; when monitoring distance changes, calling a perspective projection parameter calculation function to obtain a viewpoint height value and an overlooking view angle value; after calling the perspective projection parameter calculation function every time, according to the obtained viewpoint height value and the overlooking view angle value, generating a navigation display map with perspective projection changes by combination with an electronic map with user location; and storing the display map in a buffer zone. The invention also provides a device for automatically controlling the display scale and the three-dimensional view angle of the navigation map. By the method and the device, the displayed areas and angles of the map are changed in a dynamic way by means of continuously adjusting the viewpoint height and the overlooking view angle in the navigation process, so that consistent and comfortable user experience as well as key information is provided for users.
Description
Technical field
The present invention relates to intelligent transport technology field, particularly a kind of display scale of navigation map chi and three-dimensional visual angle autocontrol method and device.
Background technology
At car navigation device, provide and drive in route voice guide process, on device screen, shown diagram such as the route being comprised of map, course and rotation arrow etc. refers to that quoting family travels at correct line, carries out the key message correctly turning to.In general, route diagram is by an electronic chart as display base, and vehicle course is superimposed upon on map to be different from the highlight color of basic road, simultaneously in course turn to or other operations show direction of operating with arrow.
In navigation procedure, the user that drives need to understand two category informations from route diagram: " next steering operation information " and " road ahead general status "." next steering operation information " allows user know at any time next operation, and when this operating point closes on, user need to constantly pay close attention to screen and understand details of operation, especially as the complex crossing of rotary island class, the intersection of multiple tracks road turns to; " road ahead general status " is generality information, is to allow the remote trend of road situation in the very clear the place ahead of user, and especially, when user travels at highway, screen more should be user and represents " road ahead general status ".
Tradition navigator conventionally adopts fixed proportion chi to show map in voice guide process, is wished the front region seen to be equipped with crossing enlarged drawing or realistic picture by user's manual adjustments simultaneously.Though this mode can realize substantially, allow user understand " next steering operation information " and " road ahead general status ", need user manually to participate in, and crossing enlarged drawing/realistic picture and original road show discontinuously, increase user cognition load.Patent 200610157914.4 provides a kind of automatic enlarger system for turning to crossing, but this method needs first for road data Road notch portion, to set and amplify point, and the data processing work amount that this mode relates to is huge.
In addition, in navigation procedure, existing equipment all can adopt the three-dimensional visual angle of standard with certain depression angle to show map conventionally, and this visual angle is helpful for " road ahead general status " information of increasing, and has also increased the sense of reality that map and road show.But in navigation procedure, the situation of road ahead, constantly changing, when the place ahead enters crossing turn-around zone at once, needs region to concentrate on region, crossing in screen, and current while being highway, viewing area, the place ahead should be as far as the sensation that is even formed on the remotest places and disappears.
In order to solve the present situation of the form demonstration electronic chart that adopts perpendicular plan view in original GPS navigation system, patent 200610157831.5 proposes the technical scheme of a set of control map depression angle, by a perspective projection computing function collection, electronic map database, realize electronic chart together with navigation picture generation module, display module and can show with certain depression angle.
While navigating in order to solve, navigation picture needs user's manual switchover engineer's scale, and the problem that lacks peripheral facility information under large scale, patent 200610157914.4 proposes a kind of navigation image scale autocontrol method, by pre-configured engineer's scale, amplify point, while being intended to navigate to amplification point, take over seamlessly engineer's scale.
Above two patents have only been carried out independent innovative design to depression angle and map scale, but two aspect combined factors are not considered.Only have that the graded junction with the required understanding map details in the place ahead is combined with the gradual change in the required visual field, the place ahead and engineer's scale by depression angle, put into a visual angle and look high unified control system, could bring true and in good time experience to user.
In addition, patent 200810225066.5 is according to the corresponding change engineer's scale of Vehicle Speed; Patent 200880129480.4 provides a kind of visual angle change method in 3D navigation mode; Patent 201010548919.6 is only also the scheme that a kind of map scale changes with the place ahead traffic information (as corner point, track, traffic lights, one-way road etc.).These patents all as above illustrate, only concentrating on depression angle or engineer's scale.
In sum, also do not have at present a kind of can be along with the place ahead turning point be apart from distance and road ahead shape facility and the dynamic three-dimensional display model of resize ratio chi and depression angle.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of display scale of navigation map chi and three-dimensional visual angle autocontrol method and device, for realizing along with the place ahead turning point is apart from distance and road ahead shape facility and the dynamic three-dimensional display of resize ratio chi and depression angle.
The invention provides a kind of display scale of navigation map chi and three-dimensional visual angle autocontrol method, comprising:
In navigation procedure, continue to calculate the air line distance of current location and next turning point of the place ahead, when monitoring variable in distance, call perspective projection calculation of parameter function, obtain viewpoint height and depression angle numerical value;
Each triggering, call after perspective projection calculation of parameter function, according to the viewpoint height obtaining and depression angle numerical value, in conjunction with the electronic chart of user present position, the navigation generating after perspective projection transformation shows figure, and this demonstration figure is stored in buffer zone.
The present invention also provides a kind of display scale of navigation map chi and three-dimensional visual angle automaton, comprising:
Electronic map database, for road network, node, the driving path data of storing electronic map;
Next turning point distance detection module, for judging whether user's current location and next turning point distance change, and when this variable in distance, send instruction, call perspective projection calculation of parameter function, and trigger projective transformation;
Perspective projection parameter calculating module, for according to the distance of described user's current location and next turning point, by perspective projection calculation of parameter function, calculates viewpoint height and depression angle numerical value;
Perspective projection transformation image generation module, for according to described viewpoint height and depression angle numerical value, is transformed to planar electronic chart the accurate three-dimensional navigation demonstration image of one-point perspective effect, and the navigation demonstration figure of generation is stored in buffer zone.
The present invention comes dynamic change map display area and angle by constantly adjust viewpoint height in bootup process with depression angle, thus give user linking up, the presenting of comfortable user's experience and key message.
Accompanying drawing explanation
Fig. 1 is the conceptual schematic view of looking down in the embodiment of the present invention;
Fig. 2 is viewpoint height and the depression angle conceptual schematic view in the embodiment of the present invention;
Fig. 3 is high viewpoint height and little depression angle schematic diagram in the embodiment of the present invention;
Fig. 4 is low viewpoint height and large depression angle schematic diagram in the embodiment of the present invention;
Fig. 5 be in the embodiment of the present invention viewpoint height and depression angle with the distance schematic diagram that gradually changes;
A kind of display scale of navigation map chi and three-dimensional visual angle autocontrol method process flow diagram that Fig. 6 provides for the embodiment of the present invention;
Fig. 7 is the perspective projection calculation of parameter function schematic diagram that the present embodiment adopts;
A kind of display scale of navigation map chi that Fig. 8 provides for the embodiment of the present invention and the structural drawing of three-dimensional visual angle automaton.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail.
On navigation map shows, prior art scheme only considers separately that map shows dynamic change and the control of depression angle or displaying ratio chi, and the embodiment of the present invention is intended to by experiencing in conjunction with above the two navigation that forms level and smooth smoothness and clear appropriate information shows.The embodiment of the present invention is come dynamic change map display area and angle by constantly adjust viewpoint height in bootup process with depression angle, thus give user linking up, the presenting of comfortable user's experience and key message.
Illustrate, while turning right as run into 50 meters, the place ahead rotary island in navigation procedure, need to show with lower viewpoint (being map large scale) and larger depression angle (less one-point perspective effect), guarantee that steering operation is clear, there is no large deformation to be more greatly presented on screen; While turning right as 5 kilometers, the place ahead rotary island, need to form the far visual field with higher viewpoint (being map small scale) and less depression angle (i.e. larger one-point perspective effect) and contain the turning point outside 5 kilometers, the sky dummy section that may show in this case, a distant place in screen.
Whole navigation procedure is drawn near so that is arrived the process of crossing turning point and form by a series of, after arriving a certain crossing turning point and passing through, enters the process that the next one draws near.If, get after the turning point of a certain crossing o'clock as the starting point of a paragraph, from then on next turning point is then as the terminal of this paragraph, so whole navigation procedure is exactly that such " paragraph " is formed by connecting.
When superincumbent " paragraph " is initial, map adopts the mode of the little depression angle of high viewpoint to show, along with vehicle moves ahead and close for turning point, map shows that viewpoint progressively reduces, depression angle progressively increases, until crossing turning point is sentenced low viewpoint, large depression angle mode shows.When this paragraph finishes, while entering next paragraph, again progressively adjust the situation that visual angle adapts to next paragraph.
Take Fig. 1 as example, can copy from looking down the mode on land in the air and implement the embodiment of the present invention, by being arranged in aerial " eyes ", looking down forward the scene that ground obtains be equivalent to the information showing on navigation map.Wherein, " next turning point " is the next operating point for user's current location in navigation, and this turning point can be " left-hand rotation ", " right-hand rotation ", " turning around to travel ", " entering rotary island " etc., is the abstract concept point of these all operations.
Several number concepts are described in Fig. 2.Here still use " eyes " above to look down metaphor, viewpoint height is the height that " eyes " are positioned, so the small scale of high corresponding the map of viewpoint height while showing, and the corresponding large-scale map of low viewpoint height.Depression angle is to look squarely the angle of overlooking for benchmark downwards, and when being in the same viewpoint height together, Yue little ， the place ahead, depression angle visual range is far away; Otherwise depression angle is larger, visual range is more closely less.
Based on above concept, the present embodiment can be adjusted depression angle and viewpoint height according to the place ahead and next turning point distance.As Fig. 3, when the place ahead is far away apart from next turning point, viewpoint height is higher, and depression angle is less.And nearer apart from next turning point when the place ahead, while being even about to turn to, viewpoint height is lower, and depression angle is large, and the while visual field is little and concentrate on turn-around zone, as Fig. 4.
The method that the present embodiment is described is to link together above two state smoothings, forms view transformation smoothly and experiences, and sees Fig. 5.In this canonical process of Fig. 5, independent variable is user's current location and next turning point spacing of the place ahead, and dependent variable has two, i.e. viewpoint height and depression angle; Viewpoint height reduces along with dwindling of the place ahead distance, and depression angle increases along with dwindling of the place ahead distance, and visually graph region is dwindled gradually simultaneously, from the place ahead broad regions, is contracted to turning point region.Fig. 5 has described a process typically drawing near to next turning point, and whole navigation procedure is exactly to be formed continuously by N such process, at this, no longer repeats.
Fig. 6 is a kind of display scale of navigation map chi and three-dimensional visual angle autocontrol method process flow diagram that the embodiment of the present invention provides, comprises the following steps:
The correlation parameter of step 601, pre-configured perspective projection calculation of parameter function, as minimum viewpoint height value, maximum depression angle value, by rear climbing speed, and the navigation under different perspective projection parameter shows that image generates parameter.
Wherein, " the navigation demonstration image under different perspective projection parameters generates parameter " refers to that in the process of image after generating perspective projection, other desired parameters except viewpoint height and depression angle, specifically can be with reference to prior art.
The perspective projection calculation of parameter function that the present embodiment adopts is as shown in Figure 7:
Take apart from next turning point distance of the place ahead is x, and viewpoint height is y, and depression angle is θ:
y=ax
2+bx+h (x≥0)
Wherein, parameter h is minimum viewpoint height, and a and b are that viewpoint change shape is controlled parameter, comprehensively determines that viewpoint height whereabouts para-curve is anxious slow, according to expectation viewpoint height, with the corresponding reduction degree in the Distance Shortened of the place ahead, adjusts.With a=-0.1, b=1, h=0.1 is example, that is:
y=-0.1x
2+x+0.1 (x≥0)
See Fig. 7, along with dwindling apart from x value, viewpoint height declines with parabolic, until when x is 0, viewpoint height arrives lowest part.Depression angle changes with the variation of viewpoint height and the place ahead distance, that is:
θ=arctan(y/x)
In addition, minimum viewpoint height value take when map displaying ratio chi during as 1:1000 viewpoint height be as the criterion, the inverse that can directly use 1:1000 1000, calculates after y by function like this, obtains displaying ratio chi 1/y simultaneously; 75 ° of maximum depression angle recommended values, therefore keep this value after θ angle value reaches this value, until arrive turning point, because when depression angle exceeds 75 °, visual effect will trend towards vertically overlooking, and lose 3-D effect.
Navigation in buffer zone show image under the display frequency of hardware with the synchronous corresponding demonstration of user's current location.Because hardware device (being display screen) shows image with certain frequency, the navigation picture in buffer zone, finally will match on the display frequency of hardware device, then shows.
Described turning point is in navigation procedure, different from current driving road when next section of road, needs user to make some position on the map road that corresponding driving turns to behavior, as turned left, turn right, turn around, roll away from main road point; Next turning point refers to from user's current location, along the along the line next turning point of route running direction.
A kind of display scale of navigation map chi that Fig. 8 provides for the embodiment of the present invention and the structural drawing of three-dimensional visual angle automaton, comprising:
Perspective projection calculation of parameter function parameter configuration module 81, the minimum viewpoint height value adopting while calculating for configuring, maximum depression angle value, by rear climbing speed.
Next turning point distance detection module 83, for judging whether user's current location and next turning point distance change, and when this variable in distance, send instruction, call perspective projection calculation of parameter function, and trigger projective transformation.
Perspective projection parameter calculating module 84, for according to judgement user's current location and next turning point distance, by perspective projection calculation of parameter function, calculates viewpoint height and the depression angle of the smooth curve meeting in function.
Perspective projection transformation image generation module 85, be used for according to viewpoint height and depression angle, transparent effect when simulation is overlooked ground with this height and angle, the accurate three-dimensional navigation that planar electronic chart is transformed to one-point perspective effect shows image, and the navigation demonstration figure of generation is stored in buffer zone.This image gives the stereoeffect of looking down ground and road ahead in the air, when image moves with customer location and actual sensation in advancing more can embody navigation while playing continuously time.
Navigation shows image display 86, for by be stored in navigation picture in buffer zone under the display frequency of hardware with the synchronous corresponding demonstration of user's current location.
By using above-mentioned dynamic model in the projective transformation at map procedure for displaying, can realize effect that the embodiment of the present invention will reach and the problem of solution, the place ahead and next turning point distance in navigation procedure, dynamically adjust map displaying ratio chi and 3D depression angle simultaneously and optimize map viewing area and information sharpness according to the map.
In a word, the foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (9)
1. display scale of navigation map chi and a three-dimensional visual angle autocontrol method, is characterized in that, comprising:
In navigation procedure, continue to calculate the air line distance of current location and next turning point of the place ahead, when monitoring variable in distance, call perspective projection calculation of parameter function, obtain viewpoint height and depression angle numerical value;
Each triggering, call after perspective projection calculation of parameter function, according to the viewpoint height obtaining and depression angle numerical value, in conjunction with the electronic chart of user present position, the navigation generating after perspective projection transformation shows figure, and this demonstration figure is stored in buffer zone.
2. display scale of navigation map chi according to claim 1 and three-dimensional visual angle autocontrol method, is characterized in that, the method further comprises:
The correlation parameter of pre-configured perspective projection calculation of parameter function, comprises minimum viewpoint height value, maximum depression angle value, passes through rear climbing speed, and the navigation under different perspective projection parameter shows that image generates parameter.
3. display scale of navigation map chi according to claim 2 and three-dimensional visual angle autocontrol method, is characterized in that, described perspective projection calculation of parameter function comprises:
Take apart from next turning point distance of the place ahead is x, and viewpoint height is y, and depression angle is θ:
y=ax
2+bx+h (x≥0)；
Wherein, parameter h is minimum viewpoint height, and a and b are that viewpoint change shape is controlled parameter, according to expectation viewpoint height, with the corresponding reduction degree in the Distance Shortened of the place ahead, adjusts, and works as a=-0.1, b=1, and during h=0.1,
y=-0.1x
2+x+0.1 (x≥0)；
θ=arctan(y/x)。
4. display scale of navigation map chi according to claim 3 and three-dimensional visual angle autocontrol method, is characterized in that, described minimum viewpoint height value take when map displaying ratio chi during as 1:1000 viewpoint height be as the criterion, use the inverse 1000 of 1:1000; Described maximum depression angle value is 75 °.
5. according to the display scale of navigation map chi described in claim 2,3 or 4 and three-dimensional visual angle autocontrol method, it is characterized in that, navigation in described buffer zone show figure under the display frequency of hardware with the synchronous corresponding demonstration of user's current location.
6. display scale of navigation map chi according to claim 5 and three-dimensional visual angle autocontrol method, is characterized in that, the step of the navigation demonstration figure after described generation perspective projection transformation specifically comprises:
According to described viewpoint height and depression angle numerical value, transparent effect when simulation is overlooked ground with this height and angle, the accurate three-dimensional navigation that planar electronic chart is transformed to one-point perspective effect shows image.
7. display scale of navigation map chi and a three-dimensional visual angle automaton, is characterized in that, comprising:
Electronic map database, for road network, node, the driving path data of storing electronic map;
Next turning point distance detection module, for judging whether the distance of user's current location and next turning point changes, and when this variable in distance, sends instruction, calls perspective projection calculation of parameter function, and triggers projective transformation;
Perspective projection parameter calculating module, for according to the distance of described user's current location and next turning point, by perspective projection calculation of parameter function, calculates viewpoint height and depression angle numerical value;
Perspective projection transformation image generation module, for according to described viewpoint height and depression angle numerical value, is transformed to planar electronic chart the accurate three-dimensional navigation demonstration image of one-point perspective effect, and the navigation demonstration figure of generation is stored in buffer zone.
8. display scale of navigation map chi according to claim 7 and three-dimensional visual angle automaton, is characterized in that, this device further comprises:
Perspective projection calculation of parameter function parameter configuration module, the minimum viewpoint height value adopting while calculating for configuring, maximum depression angle value and by rear climbing speed.
9. according to the display scale of navigation map chi described in claim 7 or 8 and three-dimensional visual angle automaton, it is characterized in that, this device further comprises:
Navigation shows figure display module, for by be stored in navigation demonstration figure in buffer zone under the display frequency of hardware with the synchronous corresponding demonstration of user's current location.
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| CN106767885A (en) * | 2016-12-21 | 2017-05-31 | 易图通科技（北京）有限公司 | The display methods and device of true three-dimensional navigation image |
| CN107025680A (en) * | 2016-01-29 | 2017-08-08 | 高德信息技术有限公司 | A kind of map rendering intent and device |
| WO2018133728A1 (en) * | 2017-01-23 | 2018-07-26 | 高德信息技术有限公司 | Method and device for adaptively adjusting digital map |
| CN109099933A (en) * | 2018-07-12 | 2018-12-28 | 百度在线网络技术（北京）有限公司 | The method and apparatus for generating information |
| CN109345610A (en) * | 2018-10-29 | 2019-02-15 | 泰华智慧产业集团股份有限公司 | The method and system of operational commanding are shown on map |
| CN109682391A (en) * | 2018-04-04 | 2019-04-26 | 蔚来汽车有限公司 | The method for adjusting the display of map application |
| WO2019127078A1 (en) * | 2017-12-27 | 2019-07-04 | Bayerische Motoren Werke Aktiengesellschaft | Deformation correction of a digital map for a vehicle |
| CN109982006A (en) * | 2017-12-27 | 2019-07-05 | 财团法人工业技术研究院 | Virtual guiding illustrates and coincide device and its related method that coincides of true picture |
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| CN107025680A (en) * | 2016-01-29 | 2017-08-08 | 高德信息技术有限公司 | A kind of map rendering intent and device |
| CN106767885A (en) * | 2016-12-21 | 2017-05-31 | 易图通科技（北京）有限公司 | The display methods and device of true three-dimensional navigation image |
| WO2018133728A1 (en) * | 2017-01-23 | 2018-07-26 | 高德信息技术有限公司 | Method and device for adaptively adjusting digital map |
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| CN109982006A (en) * | 2017-12-27 | 2019-07-05 | 财团法人工业技术研究院 | Virtual guiding illustrates and coincide device and its related method that coincides of true picture |
| WO2019127078A1 (en) * | 2017-12-27 | 2019-07-04 | Bayerische Motoren Werke Aktiengesellschaft | Deformation correction of a digital map for a vehicle |
| US12044546B2 (en) | 2017-12-27 | 2024-07-23 | Bayerische Motoren Werke Aktiengesellschaft | Deformation correction of a digital map for a vehicle |
| CN110018569A (en) * | 2017-12-28 | 2019-07-16 | 阿尔派株式会社 | Onboard system |
| CN110019630A (en) * | 2017-12-28 | 2019-07-16 | 上海擎感智能科技有限公司 | The display methods and device of electronic map |
| CN110018569B (en) * | 2017-12-28 | 2022-11-18 | 阿尔派株式会社 | Vehicle-mounted system |
| WO2019183847A1 (en) * | 2018-03-28 | 2019-10-03 | 深圳市大疆软件科技有限公司 | Method and device for presenting real-time change of flight height |
| CN109682391A (en) * | 2018-04-04 | 2019-04-26 | 蔚来汽车有限公司 | The method for adjusting the display of map application |
| CN109099933A (en) * | 2018-07-12 | 2018-12-28 | 百度在线网络技术（北京）有限公司 | The method and apparatus for generating information |
| CN109345610A (en) * | 2018-10-29 | 2019-02-15 | 泰华智慧产业集团股份有限公司 | The method and system of operational commanding are shown on map |
| CN113706996A (en) * | 2021-08-27 | 2021-11-26 | 张慎佳 | Physiological boundary line scale for true and false map |
| CN113706996B (en) * | 2021-08-27 | 2024-04-05 | 张慎佳 | Physiological boundary scale of true and false map |
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